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could you please help me with following:

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two boats traveling in opposite direction with speed v1 and v2

when they are passing by they interchange a parcel of same mass M=50kg

as a result second boat stops and first boat continue travelling in same direction with speed u1=8.5m/s

calculate v1 and v2 when you know masses (including M) m1=1000kg and m2=500kg

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I wrote

m1*v1+m2*v2=m1*u1

but I am not able to find out second equation. I tried kinetic energy but

I think it is not conserved.

Thank you

Michael

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# Homework: conservation of momentum

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